Ubuntu update for wpa



Published: 2021-02-16 | Updated: 2022-08-07
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-12695
CVE-2021-0326
CWE-ID CWE-20
CWE-787
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Public exploit code for vulnerability #2 is available.
Vulnerable software
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Ubuntu
Operating systems & Components / Operating system

wpasupplicant (Ubuntu package)
Operating systems & Components / Operating system package or component

hostapd (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU28948

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-12695

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform a distributed denial of service (DDoS) attack.

The vulnerability exists due to a CallStranger issue in the UPnP SUBSCRIBE functionality. A remote attacker can send traffic to arbitrary destinations, leading to amplified DDoS attacks and data exfiltration.

Mitigation

Update the affected package wpa to the latest version.

Vulnerable software versions

Ubuntu: 14.04

wpasupplicant (Ubuntu package): before 2.1-0ubuntu1.7+esm3

hostapd (Ubuntu package): before 1:2.1-0ubuntu1.7+esm3


CPE2.3 External links

http://ubuntu.com/security/notices/USN-4734-2

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Out-of-bounds write

EUVDB-ID: #VU59104

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-0326

CWE-ID: CWE-787 - Out-of-bounds Write

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input within the p2p_copy_client_info() function of p2p.c in wpa_suplicant. A remote attacker pass specially crafted input to the application, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Update the affected package wpa to the latest version.

Vulnerable software versions

Ubuntu: 14.04

wpasupplicant (Ubuntu package): before 2.1-0ubuntu1.7+esm3

hostapd (Ubuntu package): before 1:2.1-0ubuntu1.7+esm3


CPE2.3 External links

http://ubuntu.com/security/notices/USN-4734-2

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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